How to convert a Fluke 77 IV average responding multimeter into a True RMS model 177 for 10 cents.
*Plus calibration gear
Should also work for converting a Fluke 83V to 87V
True RMS measurement vs Average Responding
And how to calibrate a Fluke multimeter.

Fluke 87V service manual with schematic: https://xdevs.com/doc/Fluke/87V/Fluke...

00:00 Hacking a Fluke 77 IV Multimeter
00:35 Is the Fluke 70 series discontinued?
01:15 Fluke History
03:10 I noticed something...
04:49 The AD737 True RMS converter chip
06:04 Theory of Operation
07:21 What is Crest factor
08:58 How do they do it?
09:25 Fluke 87V Schematic and the custom ASIC
10:53 Let's modify it!
12:58 A sine wave is NOT a crest factor of 1
14:01 Soldering
15:15 Will it work?
16:46 Calibration procedure
20:09 Winner Winner Chicken Dinner

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